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da Costa JL, da Matta Chasin AA. 
“Determination of MDMA, MDEA and MDA in urine by high performance liquid chromatography with fluorescence detection”. 
J Chromatogr B Analyt Technol Biomed Life Sci. 2004 Nov 01;811(1):41-5.
This paper describes the development and validation of analytical methodology for the determination of the use of MDMA, MDEA and MDA in urine. After a simple liquid extraction, the analyses were carried out on a high performance liquid chromatography HPLC in an octadecyl column, with fluorescence detection. The mobile phase using a sodium dodecyl sulfate ion-pairing reagent allows good separation and efficiency. The method showed good linearity and precision. Recovery was between 85 and 102 and detection limits were 10, 15 and 20 ng/ml for MDA, MDMA and MDEA, respectively. No interfering substances were detected with fluorescence detection.
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